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Target Snapshot

CHEMBL5403 Target Snapshot

Signal transducer and activator of transcription 5A · SINGLE PROTEIN · Homo sapiens

193Compounds
159Assays
1Approved Drugs
60.0Activities
Free Research Context

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Broader Open DB context

Frame the target before identity details

Structured disease, protein, and project context should read before the lower-level identity rail.

As of 2026-09-13

Protein identity stays anchored to UniProt P42229. Use UniProt P42229 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt P42229 as the stable identity anchor, then attach disease evidence before program review.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-13
Open source guide
Identity Layer

Cross-source identity

Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.

This review treats Signal transducer and activator of transcription 5A as ChEMBL target CHEMBL5403, mapped to UniProt P42229. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Signal transducer and activator of transcription 5A
SINGLE PROTEIN · Homo sapiens
As of 2026-09-13
ChEMBL target ID
CHEMBL5403
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P42229
Signal transducer and activator of transcription 5A
UniProt accession via ChEMBL component mapping As of 2026-09-13
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-13
www.ebi.ac.uk

Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.

Source Guidance

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Signal transducer and activator of transcription 5A is the right protein anchor across sources, using UniProt P42229 as the stable mapping.

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Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

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Evidence Card
Review-ready rationale with source-aware context

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Overview

Basic Information

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UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein LabelSignal transducer and activator of transcription 5A
UniProt AccessionP42229
Component TypeProtein
Sequence Length794 aa

Signal transducer and activator of transcription 5A

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Signal transducer and activator of transcription 5A, mapped to UniProt P42229. Sequence length is 794 aa.

Mapped IDP42229
Review nameSignal transducer and activator of transcription 5A
OrganismHomo sapiens
Clinical Profile

Clinical Phase Distribution

1
Approved
2
Phase III
1
Phase II
Assay Mix

Activity Type Distribution

IC5029.0
KI28.0
EC501.0
KD2.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL574058 8.3 IC50 5.0 Preclinical
CHEMBL603469 8.0 IC50 10.0 Clinical
CHEMBL1231124 7.6 IC50 25.0 Clinical
CHEMBL5397297 7.4 EC50 40.0 Preclinical
CHEMBL5954872 7.39 IC50 41.0 Preclinical
CHEMBL5856025 7.24 IC50 57.0 Preclinical
CHEMBL5783803 6.7 IC50 200.0 Preclinical
CHEMBL1078178 6.4 IC50 400.0 Approved
CHEMBL3108909 6.33 Kd 464.0 Preclinical
CHEMBL559787 6.16 IC50 689.0 Preclinical
Distribution

pChEMBL Value Distribution

19
5.0
13
5.5
7
6.0
1
6.5
4
7.0
1
7.5
2
8.0
0
8.5
0
9.0
0
9.5
pChEMBL
Approved Drugs

Approved Drugs

MOMELOTINIB
CHEMBL1078178
Approved 2023
Assay Landscape

Assay Landscape

159
Total Assays
50
Tested Compounds
1
Assay Types
Binding — 159 assays, 50 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 140 27 6.0
single protein format 12 20 5.4
tissue-based format 4 0
assay format 3 3 5.3

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine